<template>
  <div id="app">
    <transition :name="transitionName">   
      <router-view></router-view>
    </transition>
  </div>
</template>

<script>
import { wxConfig } from "@/utils";
import { log } from "util";
export default {
  name: "App",
  data() {
    return {
      transitionName: ""
    };
  },
  watch: {
    //使用watch 监听$router的变化
    $route(to, from) {
      //如果to索引大于from索引,判断为前进状态,反之则为后退状态
      if (to.meta.index > from.meta.index) {
        //设置动画名称
        this.transitionName = "slide-left";
      } else {
        this.transitionName = "slide-right";
      }
    }
  },
  
  created() {
    let url = location.href;
    wxConfig.call(this, url);
  }
};
</script>

<style lang="less">
#app {
  font-family: "PingFangSC-Semibold", "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
}
.slide-right-enter-active,
.slide-right-leave-active,
.slide-left-enter-active,
.slide-left-leave-active {
  will-change: transform;
  transition: all 500ms;
  position: absolute;
}
.slide-right-enter {
  opacity: 0;
  transform: translate3d(-100%, 0, 0);
}
.slide-right-leave-active {
  opacity: 0;
  transform: translate3d(100%, 0, 0);
}
.slide-left-enter {
  opacity: 0;
  transform: translate3d(100%, 0, 0);
}
.slide-left-leave-active {
  opacity: 0;
  transform: translate3d(-100%, 0, 0);
}

@import "./style/reset.less";
@import "./style/common.less";
</style>
